From 182970509bd79635a5b16a06d2e918d3f5187486 Mon Sep 17 00:00:00 2001 From: Anthony Liguori Date: Mon, 12 Dec 2011 14:29:39 -0600 Subject: rtc: add a dynamic property for retrieving the date This really shows the power of dynamic object properties compared to qdev static properties. This property represents a complex structure who's format is preserved over the wire. This is enabled by visitors. It also shows an entirely synthetic property that is not tied to device state. Signed-off-by: Anthony Liguori --- hw/mc146818rtc.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/hw/mc146818rtc.c b/hw/mc146818rtc.c index 2aaca2ff41..0c23cb0dba 100644 --- a/hw/mc146818rtc.c +++ b/hw/mc146818rtc.c @@ -614,6 +614,29 @@ static const MemoryRegionOps cmos_ops = { .old_portio = cmos_portio }; +// FIXME add int32 visitor +static void visit_type_int32(Visitor *v, int *value, const char *name, Error **errp) +{ + int64_t val = *value; + visit_type_int(v, &val, name, errp); +} + +static void rtc_get_date(DeviceState *dev, Visitor *v, void *opaque, + const char *name, Error **errp) +{ + ISADevice *isa = DO_UPCAST(ISADevice, qdev, dev); + RTCState *s = DO_UPCAST(RTCState, dev, isa); + + visit_start_struct(v, NULL, "struct tm", name, 0, errp); + visit_type_int32(v, &s->current_tm.tm_year, "tm_year", errp); + visit_type_int32(v, &s->current_tm.tm_mon, "tm_mon", errp); + visit_type_int32(v, &s->current_tm.tm_mday, "tm_mday", errp); + visit_type_int32(v, &s->current_tm.tm_hour, "tm_hour", errp); + visit_type_int32(v, &s->current_tm.tm_min, "tm_min", errp); + visit_type_int32(v, &s->current_tm.tm_sec, "tm_sec", errp); + visit_end_struct(v, errp); +} + static int rtc_initfn(ISADevice *dev) { RTCState *s = DO_UPCAST(RTCState, dev, dev); @@ -647,6 +670,10 @@ static int rtc_initfn(ISADevice *dev) qdev_set_legacy_instance_id(&dev->qdev, base, 2); qemu_register_reset(rtc_reset, s); + + qdev_property_add(&s->dev.qdev, "date", "struct tm", + rtc_get_date, NULL, NULL, s, NULL); + return 0; } -- cgit v1.2.1